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Old 09-19-2012, 10:14 AM   #1876
Tjohns
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Just noticed today. On the SOA website, the Crosstrek is rated at 33 mpg highway which seems reasonable given the higher stance. Then I looked at Edmunds and both the 2012 and 2013 Imprezas are listed as getting 25/33 mpg. If you look at the full review that Edmunds did on 10/11/2011 they wrote "Getting the CVT improves those estimates to 27/36/30"

Seems that SOA is lowering the numbers.
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Old 09-19-2012, 10:21 AM   #1877
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Originally Posted by Tjohns View Post
Seems that SOA is lowering the numbers.
If that's true, then my guess is that the EPA changed something about their fuel economy test procedure. I would further guess that other manufacturers will need to lower their EPA estimates too.
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Old 09-19-2012, 10:37 AM   #1878
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Is it 33 mpg for MT and 36 for CVT? They might say its 33 because it comes standard with MT.
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Old 09-19-2012, 10:55 AM   #1879
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The 2013 MPG numbers are up on fueleconomy.gov, they are the same as 2012.
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Old 09-19-2012, 11:56 AM   #1880
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Quote:
Originally Posted by sgoldste01
I'm wondering if those of you who are able to achieve 40-something MPGs have found a source of gas that doesn't contain any ethanol?

All of the gas sources I've found so far contain 10% ethanol, and it's my understanding that ethanol contains less energy content than gasoline, so naturally my (and everyone's) MPGs suffer as a result.

(I'm sure the ethanol industry argues that the cost of my gas is also cheaper than gas without any ethanol, so I'm not at any disadvantage.)

The best MPGs I've gotten on a road trip is 37, so I'm curious if those of you getting 40+ are using gas without any ethanol.
0.05/gallon savings actually costs more in the end (at the pump, and subsidiaries)
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Old 09-19-2012, 05:40 PM   #1881
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Quote:
Originally Posted by sgoldste01 View Post
I'm wondering if those of you who are able to achieve 40-something MPGs have found a source of gas that doesn't contain any ethanol?

All of the gas sources I've found so far contain 10% ethanol, and it's my understanding that ethanol contains less energy content than gasoline, so naturally my (and everyone's) MPGs suffer as a result.

(I'm sure the ethanol industry argues that the cost of my gas is also cheaper than gas without any ethanol, so I'm not at any disadvantage.)

The best MPGs I've gotten on a road trip is 37, so I'm curious if those of you getting 40+ are using gas without any ethanol.
First off, I'm not one of the guys getting 40+ mpg. However, I do feel that gas could have a lot to do with getting better mpg.
For the last 3 tanks of gas, I've been getting ~8% better mpg. This is without any change in driving pattern or weather changes. The only change that I can attribute it to is that my last 3 tanks of gas were regular 87 gas from Rotten Robbie. Previous to this, I was using regular 87 gas from either Unocal 76, or Valero.
The increase in mpg was instantaneous. The mpg meter started showing ~2mpg higher results soon after I got the Rotten Robbie gas.
At some point I'll fill up with Unocal 76 gas again to see if my mpg would drop when that happens. Then I would know for sure that it was the gas that made the difference.
Our impreza is equipped with knock sensor, so if it detects knock, it will automatically retard timing and make the engine less efficient --less mpg.
I'm wondering if the people getting 40+ mpg are putting in 89, 91 gas.
Or maybe they are in states which do not mandate ethanol in gas.
Here in California, ethanol blend is required by law.
For sure ethanol blended gas will result in lower mpg then pure gas.

For the record, my last tank of gas gave me 32.1 mpg(dash), 30.2(calculated). Less than 50% of my drive is freeway.
I'm slightly over the EPA estimate of 30mpg mixed.

I want to try 89, 91 gas at some point also to see if I get any boost in mpg from that.

The other point is tire pressure. I'm running 40 psi to help reduce rolling resistance. I've had problems with running manufacturer's recommended tire pressure in the past. They always seem too low and I end up with tires that wear out on the outer edges, but ok in the center. Hopefully running 40 psi tire pressure will result in more even wear and better mpg.
I've seen in Prius forums that people are running 50 psi over there and are not having any issues with tire wear. They claim to get 0.25mpg for every psi added.
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Old 09-19-2012, 06:05 PM   #1882
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Quote:
Originally Posted by bobdole888

First off, I'm not one of the guys getting 40+ mpg. However, I do feel that gas could have a lot to do with getting better mpg.
For the last 3 tanks of gas, I've been getting ~8% better mpg. This is without any change in driving pattern or weather changes. The only change that I can attribute it to is that my last 3 tanks of gas were regular 87 gas from Rotten Robbie. Previous to this, I was using regular 87 gas from either Unocal 76, or Valero.
The increase in mpg was instantaneous. The mpg meter started showing ~2mpg higher results soon after I got the Rotten Robbie gas.
At some point I'll fill up with Unocal 76 gas again to see if my mpg would drop when that happens. Then I would know for sure that it was the gas that made the difference.
Our impreza is equipped with knock sensor, so if it detects knock, it will automatically retard timing and make the engine less efficient --less mpg.
I'm wondering if the people getting 40+ mpg are putting in 89, 91 gas.
Or maybe they are in states which do not mandate ethanol in gas.
Here in California, ethanol blend is required by law.
For sure ethanol blended gas will result in lower mpg then pure gas.

For the record, my last tank of gas gave me 32.1 mpg(dash), 30.2(calculated). Less than 50% of my drive is freeway.
I'm slightly over the EPA estimate of 30mpg mixed.

I want to try 89, 91 gas at some point also to see if I get any boost in mpg from that.

The other point is tire pressure. I'm running 40 psi to help reduce rolling resistance. I've had problems with running manufacturer's recommended tire pressure in the past. They always seem too low and I end up with tires that wear out on the outer edges, but ok in the center. Hopefully running 40 psi tire pressure will result in more even wear and better mpg.
I've seen in Prius forums that people are running 50 psi over there and are not having any issues with tire wear. They claim to get 0.25mpg for every psi added.
I tried 91, no real improvement, definitely not enough to offset cost.

I also tried higher tire pressure, no improvement and handling was worse. You can do what you wish though with your tires.

I do however get better mpg with real gas and not the crap with 10% ethanol. It doesn't to seem to be 10% better like previous cars, but still 1.5mpg and only cost an extra 0.60 per fill so definitely worth it
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Old 09-19-2012, 06:41 PM   #1883
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Quote:
Originally Posted by flyboy1100 View Post
I tried 91, no real improvement, definitely not enough to offset cost.

I also tried higher tire pressure, no improvement and handling was worse. You can do what you wish though with your tires.

I do however get better mpg with real gas and not the crap with 10% ethanol. It doesn't to seem to be 10% better like previous cars, but still 1.5mpg and only cost an extra 0.60 per fill so definitely worth it
1.5mpg will only get you 21 miles farther (based on 14 gallons) for that extra 0.60.......so in a year (based on 15k) you'll have filled up 36 times gained of total of 714 miles for a total of 15,714, and at the cost of $21.60 (based on 30mpg combined). Considering that, I will stay focused on using quality BRAND fuels, rather than ethanol free.

714 miles spread out over a year isn't enough for me to go out of my way to look for ethanol free gas, especially when it's costing more at the pump every time!

Last edited by jsteg; 09-19-2012 at 06:47 PM. Reason: Recalulation
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Old 09-19-2012, 08:44 PM   #1884
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Quote:
Originally Posted by bobdole888 View Post
... I've been getting ~8% better mpg... The only change that I can attribute it to is that my last 3 tanks of gas were regular 87 gas from Rotten Robbie. Previous to this, I was using regular 87 gas from either Unocal 76, or Valero.
The increase in mpg was instantaneous. The mpg meter started showing ~2mpg higher results soon after I got the Rotten Robbie gas...

Our impreza is equipped with knock sensor, so if it detects knock, it will automatically retard timing and make the engine less efficient... I want to try 89, 91 gas at some point also to see if I get any boost in mpg from that.

The other point is tire pressure. I'm running 40 psi to help reduce rolling resistance...
Wouldn't be a bit surprised if the gas station made a difference. My last car, an Altima, lost 2 mpg when I filled up at Junior's Convenience vs. when I filled up at the New England Farms Mobile. 'Course I had to wait until the next fillup to find out...

Knock sensor - is that peculiar to CA cars? Supposedly I have CA-grade emissions system in my 'preza but first time I've heard of it. Never given much credence to the idea of boosting mpg with octane (didn't work for me after a tank of 89), but maybe...

I'm not as extreme as you, but I have been overinflating for years. I run 36 front/34 rear to get a bit of lift without stiffenning the ride too much. Side note, it took me 2 or 3 weeks to check the tire pressure after buying the car, and when I did I found the dealer had not deflated from the "shipping pressure" (their term) of ~48 psi! No ill effects on the tires I could see.
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Old 09-19-2012, 09:15 PM   #1885
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Quote:
Originally Posted by jsteg

1.5mpg will only get you 21 miles farther (based on 14 gallons) for that extra 0.60.......so in a year (based on 15k) you'll have filled up 36 times gained of total of 714 miles for a total of 15,714, and at the cost of $21.60 (based on 30mpg combined). Considering that, I will stay focused on using quality BRAND fuels, rather than ethanol free.

714 miles spread out over a year isn't enough for me to go out of my way to look for ethanol free gas, especially when it's costing more at the pump every time!
But considering an average of around 30mpg, those extra miles would cost 88.00 instead of 21 (3.70/gallon average).

For me it is a no brainer, unless I'm out of town, i know where to get ethanol free gas, and i fill up there everytime as it is on my normal commute. If I'm out of town, I'm not searching for it
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Old 09-19-2012, 09:32 PM   #1886
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My problem is that the only convenient gas station I've found that sells ethanol-free gas only sells it in its Premium gas product. The regular and mid-grade gas have ethanol. I don't want to pay for Premium in order to also get ethanol-free gas.
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Old 09-19-2012, 10:00 PM   #1887
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Quote:
Originally Posted by sgoldste01 View Post
My problem is that the only convenient gas station I've found that sells ethanol-free gas only sells it in its Premium gas product. The regular and mid-grade gas have ethanol. I don't want to pay for Premium in order to also get ethanol-free gas.
only mid grade is ethanol here (well not everywhere here, there are enough stations that have it in everything :-()
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Old 09-20-2012, 12:27 AM   #1888
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How does anyone how much ethanol is mixed in with gas?
Is there some law that requires gas stations to post this info at the pump?

Some people say that premium gas contain less ethanol, but how would we know for sure what we're getting.
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Old 09-20-2012, 04:32 AM   #1889
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Quote:
Originally Posted by bobdole888
How does anyone how much ethanol is mixed in with gas?
Is there some law that requires gas stations to post this info at the pump?

Some people say that premium gas contain less ethanol, but how would we know for sure what we're getting.
Yes there is!
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Old 09-20-2012, 04:54 AM   #1890
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Here in Toronto all gas has, by law, up to 10%. From what I read the low end 87 has 10 mid has like 7 and premium has 5,approximately. There are a few stations that carry super 94 but people say it still has some in it and at the moment costs 1.53 to 1.64/litre depending on the day lol.
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Old 09-20-2012, 02:56 PM   #1891
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No ethanol free gas stations in my entire state.
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Old 09-20-2012, 02:58 PM   #1892
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Quote:
Originally Posted by jr0bb5
No ethanol free gas stations in my entire state.
I heard that ND just passed a law mandating it, but not sure when. All other states around me mandate it
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Old 09-20-2012, 05:01 PM   #1893
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Quote:
Originally Posted by freshpreza View Post
ok yea the gas is great but people i have a sexy white 2012 impreza and its too slow does any one know a website where i can buy a turbo, or should i do a swap out to a 2011 sti engine/ tranny. i will not trade my car for a wrx or sti i just want to work on it and make like a sti ?
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Old 09-20-2012, 05:56 PM   #1894
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Quote:
Originally Posted by freshpreza View Post
ok yea the gas is great but people i have a sexy white 2012 impreza and its too slow does any one know a website where i can buy a turbo, or should i do a swap out to a 2011 sti engine/ tranny. i will not trade my car for a wrx or sti i just want to work on it and make like a sti ?

It propably would be cheaper buying a sti than to build an sti. From the way you post my money is that you don't know your mechanics very well. But in short, your answer is no. mom and dad bought u the wrong car and now you are trying to "build" the car u want.
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Old 09-20-2012, 06:07 PM   #1895
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Quote:
Originally Posted by freshpreza View Post
ok yea the gas is great but people i have a sexy white 2012 impreza and its too slow does any one know a website where i can buy a turbo, or should i do a swap out to a 2011 sti engine/ tranny. i will not trade my car for a wrx or sti i just want to work on it and make like a sti ?
What tranny do you have in your car (CVT or manual)?
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Old 09-20-2012, 06:13 PM   #1896
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Quote:
Originally Posted by freshpreza View Post
ok yea the gas is great but people i have a sexy white 2012 impreza and its too slow does any one know a website where i can buy a turbo, or should i do a swap out to a 2011 sti engine/ tranny. i will not trade my car for a wrx or sti i just want to work on it and make like a sti ?
I smell a troll.......
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Old 09-20-2012, 10:35 PM   #1897
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Don't feed it! Lol
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Old 09-21-2012, 07:54 PM   #1898
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If you *want* better mpg, you'll only get it by slowing down! I've done the variations, and it is the number 1 influence on mpg. This car does NOT get good hwy mpg. I went for a 140 mile strict hwy drive last weekend, 62 mph actual, 36.3 mpg indicated. Driving 40 miles stop-and-go commute to work this week, 55 mph top speed, I showed 36.0 mpg. I topped 41 mpg indicated one saturday, driving 5 under the limit to work.
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Old 09-21-2012, 08:07 PM   #1899
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Quote:
Originally Posted by subiTWO
If you *want* better mpg, you'll only get it by slowing down! I've done the variations, and it is the number 1 influence on mpg. This car does NOT get good hwy mpg. I went for a 140 mile strict hwy drive last weekend, 62 mph actual, 36.3 mpg indicated. Driving 40 miles stop-and-go commute to work this week, 55 mph top speed, I showed 36.0 mpg. I topped 41 mpg indicated one saturday, driving 5 under the limit to work.
All things considered and taking into consideration what competitors have to offer I think this car gets good hwy mpg for an all wheel drive!
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Old 09-21-2012, 10:52 PM   #1900
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All things considered and taking into consideration what competitors have to offer I think this car gets good hwy mpg for an all wheel drive!
exactly. if you want better mpg with the loss of awd then that exists. but i wanted decent mpg w/ awd and I have no complaints.
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